A solution is known to be 0.10 M in both Pb2+ and Sn2+
a) What molarity of sulfide ion will produce the greatest amount of lead sulfide (Ksp = 8.0 x 10-28) precipitate without precipitating any tin(II) sulfide(Ksp = 1.0 x 10-25)?
b) What [Pb2+] will remain unprecipitated in this solution after you adjust the sulfide concentration to the value calculated in part a? What percentage of the original Pb2+ in the solution has precipitated?